Glass-lined pump-barrel.



W. L. MOCORMIGK. GLASS UNED PUMP BARREL. APPLICATION FILED 00T. 20,1911.

9M 1 9 1 Ku L a. M d e Llu n e Lb a D1 cri WARREN LEE MCCORMICK, OFSAIULPA, OKLAHOMA.

GLASS-LINED PUMP-BARREL.

Specification of Letters-Patent.

PatentedvMar. 5, 1912.

Application filed ctober 20, 1911. Serial No. 655,754.

'Toiall whom t `may concern.'

Be it known that I, WARREN LEE McCon- Mrok, a citizen of the UnitedStates :of America, and a resident of Sapulpa, in the county of Creek,in the State of Oklahoma, have invented certain new and usefulImprovements in Glass-Lined Pump-Barrels, whereof the following is aspecification.

This invention relates to a pump barrelespecially adapted for oil pumps.

The object of the invention is to provide in practical form a pumpbarrel Which will notrust, pit, flute or corrode, which is not affectedby sand and which will not cut the piston cups as quickly as metalbarrels. To this end the pump barrel is constructed with a universallycushioned glass lining.

The accompanying drawings represent one embodiment of the invention inits preferred form.

Figure 1 represents a longitudinal section of the pump barrel. Fig. 2represents an enlarged longitudinal section of the upper part thereof.Fig. 3 represents an enlarged longitudinal section of the lower partthereof, a portion being broken o.

The same reference numbers indicate corresponding parts in all thefigures, round numbers being used for the principal elements andintermediate numbers for subordinate features thereof.

A tube 10 composed of thin sheet steel or other suitable metalconstitutes the outer shell of this pump barrel. This shell is providedat its lower' end with an exteriorscrew thread 11 and at its upper endwith an exterior screw thread 12. A tube 20 composed of glass isdisposed within the tube 10 and constitutes the inner lining of thecompound barrel. This vglass inner tube 20 is preferably of the samelength as the metallic outer tube 10 and terminates flush therewith atits opposite ends. The inner tube 20' is preferably provided at itslower end with an exterior annular recess 21 and at its u per end with asimilar recess 22. The bore as preferably a flared lower end 23 and aflared upper end 24 to facilitate insertion of the cups or piston of thepump.

A packing 25 preferably composed of rubber is disposed between the lowerends of the tubes 10 and 2O preferably in the recess 21 and a similarpacking 26 is preferably disposed between the upper ends of said tubes10 and 20, preferably in the recess 22.

These packings form cushions for the glass inner tube. The outercircumference of the inner tube is preferably somewhat smaller than thebore of the outer tube, and this construction permitsa slight yieldingof the` inner tube within the outer tube under the tension of thepackings aforesaid.

The tubes l0 and 20 are from four to six feet long more or less. Theinner tube is preferably not less than one-half inch thick ind the outertube one-eighth inch more or ess. l

.A coupling 30 connects the pump barrel with a suction pipe 50, anchoror sand point of the pump. This coupling has an enlarged screwthreadedbore 31 in its upper part, a smaller screwthreaded bore 32 in its lowerpart and an intermediate tapering bore 33. The larger bore 31 engagesthe threaded lower end of the tube 1() and the Vsmaller bore 32 engagesthe threaded upper end of the suction pipe 50. The tapering bore 33constitutes the valve seat for the lower valve of the ump. This bore ispreferably smaller than the bore 31 at its point of juncture therewithforming a shoulder 34 and preferably smaller than the bore 32 at itspoint of juncture therewith, forming a shoulder 35. A lower shoulder 36'is formed in the bore 32 against which the inner end of the suctionpipe rests.

A coupling 40 connects the pump barrel with the lifting or delivery pipeof the pump. This coupling has a screwt-hreaded bore 41 in its lowerpart and a smaller screwthreaded bore 42 in its upper partl and ashoulder 43 at the point of juncture of the two bores. The bore 41engages the threaded upper end of the tube 10 and the bore 42 thethreaded lower end of the pipe 60.

A rubber ring is disposed in the bore 31y of the coupling 30 and thelowerends of the tubes 10 and 2O restagainst said ring. A rubber ring isdisposed in the bore 41 of the coupling 40 and the upper ends of saidtubes rest against said rlng. These rings absorb vibrations and inconnection with the packings 25 and '26 provide a uni# versal cushionfor the glass tube and prevent breakage thereof.l The universal cushionis operative in all directions of stress to which the lining tube may besubjected. The rings 70 and 75 as well as the packilgs 25 and 26 may becomposed of any sulta ends of said outer tube and ru packing materialnot hard nor ver7 soft, but of a character which will absorb vibrations.

I claim as my invention l. A pump barrel comprisin an outer metallicshell, an inner glass tu e disposed Within said shell, elast-ic packingsbetween said tubes, couplings engagng the opposite ends of said outertube and rubber rings disposed in said couplings between shouldersthereof and the ends of said tubes.

2. A pump barrel comprising an outer metallic shell, an inner glass tubedisposed within lsaid shell and having a bore which is flared at oneend, elastic paekings between said tubes, couplings engaginlg theopposite ber rings disposed in said couplings between shoulders thereofand the ends of said tubes.

3. A pump barrel comprisin an outer metallic shell, an inner glass tuedisposed within said shell ,and havin a bore which is fiared at' bothends, elastlc packings between said tubes, couplings engaging theopposite ends of said outer tube and rubber rings disposed in saidcouplings between shoulders thereof and the ends of said tubes.

4. A pump barrel comprising van outer metallic shell, an inner glasstube disposed within said shell and provided with eX- terior recesses atits opposite ends, elastic packings disposed betweensaid tubes in saidrecesses, couplings engaging the opposite ends of said outer tube andrubber rings disposed in said couplings between shoulders thereof andthe ends of said tubes.

5. A pump barrel comprising an outer metallic shell, couplings engagingthe opposite ends thereof, and a glass tube universally cushioned withinsaid shell between said couplings.

v WARREN LEE MCCORMICK.

Witnesses:

S. E. BAiLEY, HERMAN BRUSH.

